DHCP is used by hosts to get initial configuration information, which includes parameters such as IP address, subnet mask, and default gateway, upon boot up. Since each host needs an IP address to communicate in an IP network, DHCP eases the administrative burden of manually configuring each host with an IP address.
Network Address Translation, or NAT, enables computers on private networks to access resources on the Internet or other public network. NAT is an IETF standard that enables a LAN to use one set of IP addresses for internal traffic, typically private address space as defined in RFC 1918 . . .
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